This horror tale focuses on visitors to the secluded mansion of Hill House who have been called to the isolated location by Dr. David Marrow (Liam Neeson) as part of a study on insomnia. However, Marrow is really investigating fear, and he plans to scare the subjects, including the introverted Nell (Lili Taylor) and the seductive Theo (Catherine Zeta-Jones). Unfortunately for Marrow and everyone staying at Hill House, the manor is actually haunted by an evil spirit out to torment its guests.